Rate Limiting of RPF Failure Traffic
When you enable rate limiting of packets that fail the RPF check (non-RPF packets), most non-RPF packets are dropped in hardware. According to the multicast protocol specification, the router needs to receive the non-RPF packets for the PIM assert mechanism to function properly, so all non-RPF packets cannot be dropped in hardware. When a non-RPF packet is received, a NetFlow entry is created for each non-RPF flow. When the first non-RPF packet arrives, the PFC bridges the pa..
Open system authentication is the default mode that 802.11 uses to authenticate radio cards to an access point. In this mode, a radio card sends an authentication frame to the access point, and the access point returns an authentication response. This form of authentication does not offer any real security. It is mainly part of the standard as a baseline authentication method. When in the process of joining a network, the radio card completes open system authentication with ..
Before delving into the typical topologies, it is wise to understand the overall network design process. As with any systems design effort, network design is an exercise in meeting new and old requirements while working within certain constraints. These constraints include money, labor, technology, space, and time. In addition, there may be social or political constraints, such as the mandated use of certain standards or vendors. Economic constraints play a major role in an..
If you want to increase the number of VTY ports available on the router for remote access, create a reference to the additional lines in the configuration as follows: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z.Router1(config)#line vty 0 9Router1(config-line)#exitRouter1(config)#endRouter1# This command defines the characteristics for a range of VTY ports from 0 to 9. Since ports 0 to 4 exist by default, this has the effect of ..
The distribution layer provides interconnection between the campus network’s access and core layers. Devices in this layer, sometimes called building distribution switches, should have the following capabilities: ■ Aggregation of multiple access-layer devices ■ High Layer 3 throughput for packet handling ■ Security and policy-based connectivity functions through access lists or packet filters ■ QoS features ■ Scalable and resilient high-speed links to the core and..
